Snubber



Feb. 27,1923.

$0M; wk $211M 3460/1/25 w. M. ELQENNING SNUBBER Filed May 16, 1922 Inthe drawing,

1 Patentezlr se, 2?, 1923..

se s.

SNUBBER.

Application filed may 16,

To all whom it may concern: Be it known that I, WILLIAM M. BoEN-l MING,a citizen of the United States, and resident of Menitowoc, in the countyof 5.Manitowc and State of Wisconsin, have invented certain new anduseful Improvements in Snubber's; end I (lohereby declare that thefollowingis a full, clear, end exectdescri tion thereof. ll y inventionrefers to re-coil shock abisjgrbers, or what is, generally termed, asnulr' r. The object of my invention is to provide a simple, economicaland efiective rotary shock absorber of the strap and pulley type,

wherein a. maximum clutching surface results, together with compactnessemf-structure. The specific object of my invention is to provide asnubber, the construction and. or:

..20 rangement of which is such. that e spring controlled pulley,carrying a coil strap, is nested within an interrupted circular shell,having a yieldable'end section, whereby the strap, in an unwinding.operation, is sub-' jected to a friction gripping or clutch engagementupon multiple surfaces,.which action is due to the fact that theresilient or yieldable shell will contract or compress under load strainexerted thereon, by e pull of the strap. v

Another object of my invention is to provide means in connection withthe circular shell for adjusting the some, whereby variation inthefriction surface may hehad to increase or decrease the clutching action,in a snubbing operation, in proportion to the load of the vehicle'towhich the device is attached.

With the 'above objects in view, the inven- 40 tion consists in certainpeculiarities of construction and combination of parts as arehereinarter set forth with reference to the accomfinying drawings andsubsequently claimed.

Figure- 1 represents a sectionaleleuntion of a snuhber, embodying thefeatures of my invention, the section being indicated by line'1--1 ofFigure. 2, and

Y Figure2, a. face view of the snubloer, parts of'the same being removedand other parts in section, as indicated by line 2-2 of Fi 're 1.

eferr ng loyv characters to the drawings, 56 A represe; ts a. fragmentof a. chassis or frame of a vehicle. Secured thereto, is a,

a at F1 1922. Serial in). 561,812.

stud 3, huving a screw threaded. end. '60 Loosely mounted upon the stud3 is a; shell 4, a. rear flange 501' which shell is'provided with aseries of concentrically arranged oerturesfi as best infdicated indotted lines,

re 2. Any one of these apertures is selectively arranged to; engage a.locking pin- 7, that projects inwardly from the hub disk 1'; l i As bestshown inFignre Q, thecirculer shell 4, in this exeinplificetionv of myinvention, is partly rigid iii-structure and has attached thereto, a.spring section'or'end 4'; The yieldeble endis inspiralform and the freeend 4", of the yieldeble end section under-laps the outer ri%1d endportion of the 75,

shell. -Obviously, whi e I have shown the yieldeble end 4, as screwed orriveted to the rigid section of the shelhthe said sprin end may, in someinstances, be integral 51ers with, or the spring and may consist of s,so plurality of spring sections nested together to add rigidity and lifeto the structure.

Rototably mounted-upon-the stud 3 and encased within the shell 4:, is a.pulley 8., A; coil spring 9'is. fitted over and about the hub; of thepulley and the stud 3. One end oi" the spring is attached by e-pin mm;the pulley and the opposite outer end off thd spring is'suita'blysecured to the stud Shy-e to said" studg-"ofl collar 11 which isfastened Hence it will be seen that when the pulley is? rotatedclockwise, the cold spring" will be wound, and upon releaQe of loadstrain upon:

. seid pulley,.the coil spfiingwill' cause the same to rotate-in edirectioii of the arrow, iis indicated in Figure-2, 1 l

In this exemphficetion of my invention, the face of the pulley, forconvenience,- is interrupted and it his secured thereto, one

end of a belt or strep 1'2. -The strap is norloo melly trained orcoiledabout the face of the pulley, for example, 1;; turns, and the outer coil1-2 of the strepv is thereafter trained over the outer face of theyieldeble end section-of said shell, and from thence it travels 1 05over a rigid portion of the shell downwardly to a fastening devicecarried by the vehicle axle, not shown. Hence it will be seen that theflexible.

flouting end 4" of the end section 4' is snugly nested. Between twocoils oi the strap. Should the vehicle frome and axle tend to 1 I AA speuol spurt nuclei" recoil shock conditions, ii will be observecl'i'bel;(the pulley will revolve sp'einsi lube spring pressure meal the strapwill films uuccil fiom its uesoecl engegcmens Willi pulley anfi shell.in el footing this unwilling, clue ho pull of blue strep, the outer coil19/ ofseid slrrsp will exec"; a; spring upon the cool l" ofihe'yiolcliog'sliell seciaion, cool this pressure will, in i ,lose led,upon the ouier face will be increased co-s, moxiiniwi. words, when theSi /1?; ploy ml o of she pulley, ii; will exert on. upon finecl L to theit'igicl surface i see blisgfiielcling surface thereof. Hence willbe son that shemeximum of friclziouj between shell and sire-p is ob mined ins structure of minute proportions. Upon release of e spreszling sit-ruinbet-Ween the axle and fi'ofilti, oi the vehicle, it will be noted shesthe skeup coil spring; 9 will rewind Elie strep upon she face, of shepulley or shell, i

It will apparent slim; the ficic'iionof. breaking); surfaces between thecoil strap and circular shell body can be incceased or cliiniz'iis'hecl, due co adjustment of the shell i upon the stud 3. Forexample, by relicsi'iizgz to Figure :1 off the drawings, it desired toincrease i-lie -"f1'ioli0nnl euros belvveen the strap and shell, thesaid shell can be manually rotaseal in the direction of the arrow 9:,and ii is is desired. to decrease the friciiousl surface, the shell maybe no iutecl in the opposite direction. This ecljustmsut of the sh ll tovary the frictional resismucc bebween the suubber elements is obtainedby loosening a, retaining nut 3, Wl1l(jl1 is in tlireovled union withthe end of the stud 3. After such- .loosening, a cover flange orhousing" 13, together with the lungs 5 of the shell, is shifted axiallyupon the stud of she is 3, so to eifect o-discnbetween the pin 7 unqithe aperture 6 oi the iiainge or Web 5. in shifting the shelllongitudinally, it will be observed that the coil spring; Will beslighily compressed, and after the proper adjustment of the shell uponits axis, the seleciecl apes Euro 6 in the shell Web or flung ispermitted to engage. the pin 7, whereby said shell is locked in itsadjusted position. This adjusiment oi the shell to increase or ol ciezse the suriiice, is an important feature of my invention, as it rendersthe structure capable of meeting conditions of light and heavy load.

An impel-suns feature, however, of this invention, is the provision ofacircular lvimzonul shell body, halving u yield-able end section, :avliei'eby double gripping surface will result Wiin seicrence to the coilstrap upon the pulleyw time strap or bend, where.

uses

fl liile l have shown and described a simple exemplication and apractlcali constzcuciion for carrying out my invention minuiely as todetails, it is understoodthot she struciuml features may all be variedbore, the some including an lIltBIlllPliBd cir-.

culei shell, having a yieldeble end section, a spring controlled pulleymounted therein, and a strap connecting the pulley anal oiliei vehiclemember, the strap being trained over the shell, yvhereby a doubleclutching engagement between the shell and strap is efiected whensaid'strep 1s unwound,

from the pulley. .L

2. In a vehicle shock absorber, thecom -f bination of members forming anattscb;

merit to a relatively movable exile and hub, frame; a. hub carried byone of the mombei's including an interrupted circular shell having aninner ,yieldablc end, a springcontrollerl pulley mounted Within. theshell,

a strap coiled about the pulley and trainecl over the yiclcleble end ofthe shell,"whereby the upper and lower surfaces of the yielcleble shellcurl will effect a clutching engagemenl; between the surfaces of thecfoircscid strap in u snubbing operation;

- ,1 vehicle shock absorber, the. com-- biusizion of members forming anmat/tachmm to relatively movable axle and hub frame; a, hub carried byone of the mem bers including an interrupted circular shell hoving'sninner yielclsble end, u spring controlled pulley mounted Within theshell, a strap coiled about the pulley and trained over the yielclableend; of the shell, Whereby the upper and lower surfaces of the yiekleblsshell end Will effect a clutching engegemenf; between the surfaces ofthe aforcssiil strap in a snu bing operation, and means for adjustingthe frictional engagement varied. r

' of the scrap is ei. A snubber comp,li'isinp; a uiember including adisk and stud, an interrupted and locking the shell, whereby its surfacewitbrelation to magmas bedy', wim'eby a double gripping surface isefi'ected between the spring end of the shell and cOiis of iheait'nresaid strap. I

In a "vehicle shock absorber, the 00mbmatmn of members fommng an attachment to a relatively movable hub frame; a spring f'OBCIOHEd pulleymounted on one 01". the iflelnbei'fi, a circular shell disposed about1312 pulley having a yieldable portion,

and a strap coiled about the pulley and. over the yieldable' end'of theshell, the opposite secured to the other in the county of Manitowoc andState of-

